Malicious PDF — malware analysis report

Static analysis result for SHA-256 1764912f07a3f881…

MALICIOUS

PDF

42.0 KB Created: 2020-08-13 14:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f5d214841bccd2e7be7607c2c420f6c SHA-1: 38c302044eb11c7e059332f26c97011ee1721060 SHA-256: 1764912f07a3f881055819e02e199aa78e83fb1518edc261fd5528972b14fb00
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links designed to redirect users to potentially malicious infrastructure, masquerading as a download for "Ez pdf reader pro apk full". The ML classifier strongly indicated maliciousness, and the presence of a redirector link further supports this. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure users to external sites, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wb?keyword=ez%20pdf%20reader%20pro%20apk%20full In PDF document text
    • http://bomewe.trivalleysir34.org/uploads/1/3/1/4/131455158/5688734.pdfIn PDF document text
    • http://files.theabsurdists.com/uploads/1/3/2/6/132681672/1495146.pdfIn PDF document text
    • http://zuduvo.wrhs65.net/uploads/1/3/1/6/131606490/pagimiva-fafad-xobulumovige.pdfIn PDF document text
    • http://files.freetodreamvacay.com/uploads/1/3/1/1/131163898/67ab127e.pdfIn PDF document text
    • http://bojuz.cornwallplants.com/uploads/1/3/1/6/131636664/vuximira.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/xotodaxivesixavoguzovogir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3352/4386/files/22428133358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5428/4450/files/73752226844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6012/4065/files/votaroxapilifeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/arabic_bilingual_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/42561497249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/43403694607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8422/6453/files/zosizuxadiditus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/football_manager_2016_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/most_popular_discord_servers.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FD 4928 bytes
SHA-256: ead6cf829a4da7531cfa7201b8bd116df4b40830e46129191b6f1b1b6213ba45
font_01_sfnt_off000075e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E1 10876 bytes
SHA-256: 3d721b54900a6f1d1d04b5c9ab6f2b6f60567eca84edc5caa7b65cf254184efa

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